Hi,
I just thought I would post a link to an excellent pdf about ON1's camera profiles which are included under the Tone & Color section of the Develop tab. This gives a good explanation which I found helpful and hopefully others will as well: ononesoft.cachefly.net/content/ON1-Plus-Camera-Profiles-Editing-Guide.pdf
PS. I also posted the above on the 'other' site for former DPR followers but was unable to sign back in on that site because I had failed to save the psswrd properly! I have requested a link to set a new one several times but still have not rec'd any so that is when I discovered this new site...and made sure my psswrd manager saved my info for this one!